Clean up multiarch_utils.go

[imjasonh]

• unexport a bunch of stuff that doesn't need to be exported
• use sets.NewString instead of map[string]bool
• remove skipIfExcluded from things that already call setup()

/cc @barthy1

Submitter Checklist

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Release Notes

NONE

[tekton-robot]

@imjasonh: GitHub didn't allow me to request PR reviews from the following users: barthy1.

Note that only tektoncd members and repo collaborators can review this PR, and authors cannot review their own PRs.

In response to this:

• unexport a bunch of stuff that doesn't need to be exported
• use sets.NewString instead of map[string]bool
• remove skipIfExcluded from things that already call setup()

/cc @barthy1

Submitter Checklist

These are the criteria that every PR should meet, please check them off as you
review them:

• [y] Includes tests (if functionality changed/added)
• [n] Includes docs (if user facing)
• [y] Commit messages follow commit message best practices
• [y] Release notes block has been filled in or deleted (only if no user facing changes)

See the contribution guide for more details.

Double check this list of stuff that's easy to miss:

• If you are adding a new binary/image to the cmd dir, please update
  the release Task to build and release this image.

Reviewer Notes

If API changes are included, additive changes must be approved by at least two OWNERS and backwards incompatible changes must be approved by more than 50% of the OWNERS, and they must first be added in a backwards compatible way.

Release Notes

NONE

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[tekton-robot]

The following is the coverage report on the affected files.
Say /test pull-tekton-pipeline-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
test/multiarch_utils.go	61.9%	53.8%	-8.1

[imjasonh]

/test pull-tekton-pipeline-integration-tests

[imjasonh]

/retest

[dibyom]

/kind cleanup

[tekton-robot]

The following is the coverage report on the affected files.
Say /test pull-tekton-pipeline-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
test/multiarch_utils.go	61.9%	53.8%	-8.1

[vdemeester]

/lgtm
/cc @barthy1

[tekton-robot]

@vdemeester: GitHub didn't allow me to request PR reviews from the following users: barthy1.

Note that only tektoncd members and repo collaborators can review this PR, and authors cannot review their own PRs.

In response to this:

/lgtm
/cc @barthy1

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[barthy1]

e2e and examples tests were finished successfully for s390x, so lgtm

[dlorenc]

/approve

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dlorenc

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files:

• OWNERS [dlorenc]

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[tekton-robot]

The following is the coverage report on the affected files.
Say /test pull-tekton-pipeline-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
test/multiarch_utils.go	61.9%	53.8%	-8.1

[vdemeester]

/lgtm

[imjasonh]

/test pull-tekton-pipeline-integration-tests